<!DOCTYPE html>
<html>
<head>
    <title></title>
    <script type="text/javascript" src="jquery-1.8.3.js" ></script>
    <script type="text/javascript" src="js/libs/jquery/ui.core.js" ></script>
    <script type="text/javascript" src="js/libs/jquery/ui.dropdownchecklist-1.4-min.js" ></script>
    <link href="css/ui.dropdownchecklist.standalone.css" rel="stylesheet"/>
    <link href="css/ui.dropdownchecklist.themeroller.css" rel="stylesheet"/>


</head>
<body>

<select id="s1">

    <option>
        asdgr
    </option>
    <option>
        asasd
    </option>
    <option>
        asd
    </option>

</select>

</body>
</html>

        <script type="text/javascript">
            $("#s1").dropdownchecklist();
        </script>